2. Technical principle
Osteotomy can cut the corresponding bone tissue according to different symptoms and deformities, and then reassemble the bone pieces according to the predetermined position, so as to rebuild the normal bony scaffold of craniofacial region and achieve the purpose of plastic deformity.
3. Adapt to the crowd and taboo crowd
1) Adapted population: the people with partial jaw are characterized by asymmetrical and uncoordinated facial structure and abnormal occlusion of teeth and jaws.
2) Taboo crowd
People with heart disease, hypertension, diabetes or other important organ diseases.
② those with severe scar constitution.
③ Patients with odontogenic or branchial infection in maxillofacial region.
4 women during pregnancy or menstrual period.
(5) People with psychological barriers.
4. preoperative design: according to the specific deformity, design the corresponding osteotomy method, locate the osteotomy position and mark it well.
5. Technical methods
(1) The patient lies flat, and the operating area and surrounding tissues are disinfected.
② Anesthesia: General anesthesia is generally used.
③ Incision from oral cavity, peeling off layer by layer, and exposing bone tissue.
(4) Cut the bone tissue, rotate or move the corresponding bone tissue, so that the central line of the incisors is on the same straight line and fixed. Generally fixed with titanium nails.
⑤ Suture: Rinse the wound repeatedly and sew the periosteum, muscle and mucosa in turn.
6. Risks and complications
① Infection: Any operation may be infected, especially the incision in the mouth, eating and other reasons will increase the possibility of infection. Antibiotics should be used according to the doctor's advice for 5-7 days after operation.
② The operation area is red and swollen.
③ Fracture: When the bone chisel is used to cut off hard bone tissue, it is easy to cause fracture if the force is too strong.
④ Hemorrhage and postoperative hematoma: There is more bleeding during osteotomy, which is easy to form congestion.
⑤ Nerve injury: Nerve injury may be caused during delamination.
⑥ Bilateral asymmetry: When bone tissue is cut off, bilateral bone resection may be asymmetrical.
⑦ The effect is not ideal: too much bone tissue may be removed during the operation, resulting in other types of deformities, or too little removal may not achieve the ideal effect.
7. Recovery time
After operation, the pressure should be increased for 5-7 days, and antibiotics should be taken according to the doctor's advice. The stitches can be removed after one week, and the local swelling will be obviously relieved. 1 month will basically return to normal, but the recovery situation is also different due to personal physique and recovery status.
8. Take notes
1)
① Stop drinking and taking vasodilators such as aspirin and vitamin E one week before operation.
(2) before the operation, to ensure good health, no infectious diseases or other body inflammation.
③ Don't make up before the operation.
2) Matters needing attention after operation
① You can chew after operation, but you can't chew or bite for three months.
② Keep the operation site clean and sanitary, and try to avoid water accumulation in the operation area within 7 days after operation.
3 avoid eating irritating foods, such as peppers.
(4) Strictly follow the doctor's advice for medication and follow-up. 1. Label: surgery, level 4 surgery.
2. Technical principle
Skeletonization is a very important technique in craniomaxillofacial surgery, which is very important for reconstructing the continuity of bone fragments after osteotomy and increasing the bone mass in the corresponding parts. Bone graft materials can be divided into autogenous bone and bone biological substitutes. Autologous bone can make the reconstruction of bone fragments after osteotomy continuous, and bone biological substitutes can increase the bone mass of corresponding parts. There are many ways of bone grafting, but generally speaking, the reconstruction of facial contour is by shaping the shape of the implanted bone and connecting it to the appropriate part.
3. Adapt to the crowd and taboo crowd
1) Adapted population: the people with partial jaw are characterized by asymmetrical and uncoordinated facial structure and abnormal occlusion of teeth and jaws.
2) Taboo crowd
People with heart disease, hypertension, diabetes or other important organ diseases.
② those with severe scar constitution.
③ Patients with odontogenic or branchial infection in maxillofacial region.
4 women during pregnancy or menstrual period.
(5) People with psychological barriers.
4. Preoperative design: locate and mark the osteotomy position, and design and carve implants with appropriate shapes as needed.
5. Technical methods
(1) The patient lies flat, and the operating area and surrounding tissues are disinfected.
② Anesthesia: General anesthesia is generally used.
③ Incision was made at the designed site before operation, and the bone tissue was stripped layer by layer to expose the bone tissue.
(4) Implant the carved tissue into a proper position and fix it.
⑤ Suture: Rinse the wound repeatedly and sew the periosteum, muscle and mucosa in turn.
6. Risks and complications
① Infection: Any operation may be infected, especially the incision in the mouth, eating and other reasons will increase the possibility of infection. Antibiotics should be used according to the doctor's advice for 5-7 days after operation.
② Hemorrhage and postoperative hematoma: There is more bleeding during bone grafting, which is easy to form congestion.
③ Nerve injury: Nerve injury may be caused during delamination.
④ Implant tissue displacement: After bone-based hemimandibular plastic surgery, there is the possibility of implant tissue displacement, once it happens, you should seek medical attention in time.
⑤ Bilateral asymmetry: bilateral bone asymmetry may be caused after surgical implantation, and plastic surgery is needed.
⑥ The effect is not ideal: There may be other types of malformations caused by various reasons during the operation, or there may be too few implanted parts to achieve the ideal effect.
7. Recovery time
After operation, the pressure should be increased for 5-7 days, and antibiotics should be taken according to the doctor's advice. One week later, the suture can be removed, and severe pain and swelling in the operation area may occur about 3 days after operation, and it basically returns to normal about 1 month, but the recovery situation varies according to individual physique and recovery status.
8. Take notes
1)
① Stop drinking and taking vasodilators such as aspirin and vitamin E one week before operation.
(2) before the operation, to ensure good health, no infectious diseases or other body inflammation.
③ Don't make up before the operation.
2) Matters needing attention after operation
① You can chew after operation, but you can't chew or bite for three months.
② Keep the operation site clean and sanitary, and try to avoid water accumulation in the operation area within 7 days after operation.
3 avoid eating irritating foods, such as peppers.
(4) Strictly follow the doctor's advice for medication and follow-up.